nelson



(No Model.) 2 Sheets-.Sheet 1.

E. NELSON. FEED WATER vHEATER AND GONDBNSER.

No. 477,814. lPatentedJu' e 28, 1892.

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UNITED .STATES @PATENT OFFICE.

ELIIIU NELSON, OF NEW YORK, N. Y., ASSIGNOR OF ONE-HALF TO WILLIAM M. MACBEAN, OF SAME PLACE.

FEED-iWATER HEATER AND CONDENSER.

SPECIFICATION forming part of Letters Patent No.` 477,814, dated June 28, 1892.

Application filed August 31, 1891. Serial No. 404,173. (No model.) I

To all whom it may concern,.- the arrangement described serves to carry the Be it known that I, ELIHU NELSON, a citizen feed-Water to theboiler hot, inasmuch as this of the United States, residing at New York, water meets the drips and radiators, returns in the county of New York and State of New after they have become somewhat cool, and, 55 5 York, have invented certain new and useful taking up some of their heat, passesv con- Improvements in Feed-Water Heaters andq stantly along a course which is gradually hot- Condensers; and I do hereby declare the folter and hotter until it comes to the point lowing to be afull, clear, and exact description where the drips and returns enter the conof the invention, such as will enable others denser. Beyond this point I arrange to have 6o 1o skilled in the art to which it appertains to the feed-water met bythe exhaust-steam from make and use the same.- the boiler-pump, (this steam also travelingin a The object of my invention is to do away direction opposite to thatof the feed-water,) so with the waste which is now so common in the that the feed-Water passes into the boiler at use of engines in buildings where the `steam a very high temperature. 65 15 is utilized for heating purposes, for running The oil-separator, as such, does not form a the elevators, and so on. In operating such part of the' present invention, nor have I engine it is now customary to let the drips claimed it in combination with the other parts from the engine and the returns from the raof the apparatus. f diators pass off Without being utilized. More- From the description which follows it will 7o zo over, the exhaust from the boiler-pumpis usube seen that, owing to the arrangement of the ally carried off to the open air, its heat being different parts, it is impossible that any water in this way allowed to goto waste. I obviate should be carried to the boiler without being the waste thus occasioned by providing an rst heated by the exhaust-steam from the apparatus wherein the heat of the exhaustboiler-pump. 75 2 5 steam from the boiler-pump is utilized in rais- I have illustrated my invention in the acing the temperature of the feed-Water, and companying drawings, in Whichalso the heat of the engine-drips and the ra- Figure 1 is an elevation of my apparatus, i

diator-returns I make use of for the same purthe oil-separator being shown partly in secpose. Moreover, in buildings which are heated tions. Fig. 2 is a detail view; and Fig'. 3 is an 8o 3o by the exhaust-steam of the engine there is a elevation of a slightly-different form of appaconsiderable amount of oil passing through ratus, showing the connections to the engines the radiators along with the exhaust, and for and the boiler-pump. this reason the returns from the radiators are Referring to the drawings by letter, I show ordinarily passed into the sewer, the oil makin Fig. 1 a series of sections 1 2 3 4 5 6 7 S 9 85 35 ing them unfit for use in the boiler. In my l0 11 12, making up my condenser and feedapparatns these returns are carried to the water heater. Each section consists of two feed-Water heater and the heat is transferred pipes, one within the other, the central pipe to the feed-water, as already indicated; but forming a chamber for the exhaust-steam after it emerges from the heater I pass it from the boiler-pump or for the engine-drips 9o 4o into a separator to separate the oil from the and radiator-returns, as the case may be. water, so that the latter can be passed into The two pipes are connected together, as the sewer or wherever desired. In doing shown in Fig. 2, by Ts 13, which screw up this I pass the heating-Water in an opposite on both pipes, the latter being .provided for direction from that taken by the feedwathis purpose with screws of similar pitch. 95 45 ter, the result being that the heating-water Outside the Ts are put on lock-nuts 14 and when it passes out into the sewer or else- 15, the former of which screw uptight against where is comparatively cool and in such conf the ends of the Ts 13 and the latter of which dition that it will not give rise to the noX- are screwed against the ends of Ls 16, which ions vapors which are the cause of much are screwed upon the ends of the inner pipes. 10o 5o trouble when the sewers are traversed by wa- The Ls 16 are joined by vertical pipes 17 ter atahigh temperature. Onthe other hand, and the Ts 13 by vertical pipes 18, the said and also that the annular chambers are simi-v larly connected to form a passage for the feed- Water. The feed-water, being passed through annular chambers, as described, will present a large amount of surface in proportion to its volume, and, consequently, will' take up heat with great comparative rapidity and be heated to the proper degree so much the sooner. To facilitate this process the sizes ofthe pipes may be graduated in such a manner as to leave the feed-water very thin outside the inner pipe.

It will be observed that, beginning withsection 6, the ends of the inner section -pipe are capped with Ts instead of Ls, and that these Ts are provided with plugs I9. The object of this is to admit of cleaning the inner pipes, the plugs being removable for this purpose. The reason why this construction begins with section 6 is because it is at this section that the returns from the radiators enter, carrying oil, which necessitates the cleansing process.

The connecting-pipes 17 and 18 for the inner and outer chambers, respectively, are sufcient to brace succeeding sections at one end; but at the opposite ends I supply a separate brace 20, as shown. To support the whole structure I supply legs or standards 2l 21, which are set in bases 22 22 at the bottom. On the end of the inner pipe of the last scction I secure a T 23, and I couple this with a pipe or L 24, leading to the cap of my oilseparator 25. rator a pipe 26 leads olf, which is joined by a T with a vertical pipe 27, connected to the exit-pipe 28. A by-pass 29 leads from the T 23 to a T 30, connected with the pipe 28. I may provide a Vent-pipe 3l for the pipe 29; or I may dispense with the same.

At 32 32 32 32 I show pipes for the enginedrips and radiator-returns. f

At 33 I show the main drip-pipe, and at 34 a branch drip-pipe. The pipe 33 is connected through a check-valve 35 and suitable Ls and Ts with the central pipe of section 6. This pipe also has an extension 36 leading to the exhaust of the engine. In the latter pipe is avalve 37. The pipe 38 is the inlet-pipe for the feed-water, the pipe 39 is the inlet for the exhaust-steam from the boiler-pump, and the pipe 4.0 is the pipe leading to the boiler.

Such being the construction and arrangement of the parts, I will now describe the inode of operation of the apparatus taken as a whole. The valve 37 will, when the radiators are in use-that is, in the winter seasonbe either wholly or partially closed, according to what is found necessary. If it is not p where without danger. at the top of the separator and can be drawn needful to draw on the exhaust-steam from the engine, this valve will be. completely closed. Otherwise ity may be opened completely or partially.

It will be understood the engine-drips pass into section 6 both summer and winter; but

y the radiator-returns only during the cold season when the radiators are in use.

In either case heated water or condensed steam will vpass into this section from the pipe 33, and will take a downward course toward the lower section. Gradually becoming cool, it will,in

Y the lower section, meet the feed-water While it is cold and part with the greater portion of its remaining heat, thus passing into the oilseparator comparatively cool. On the other hand, the feed-water will gradually become more heated and willy constantly meeta portion of the heating medium, which is less cooled by condensation. In this way both the feed-Water and the heating medium act with the highest possible degreeof efficiency, the former exerting its greatest possible con- Idensing effect and the latter its greatest possible heating effect. i passes in its upward course beyond the sixth section, it is met by the exhaust-steam ot' the l boiler-pump and heated to a still higher de- When thel Afeed-Water grec, so that it passesinto the boiler at a very high temperature. It is largely for this purpose (so that the feed-water maybe subjected to higher and higher degrees of temperature) that I have caused the main drip-pipeto be connected at about thev middle section,and

f have caused the currents for heating and for condensing to flow in opposite directions;but ithe arrangement also serves the purpose of 1 preventing the choking and back-pressure on the boiler-pump which would take lplace if the pipes 33 and 36 were led into `the first section.

Near the bottom of the sepa- 5 Returning now to thewaters of condensation y which pass out from the lower section into the l separator it will be seen that they pass through 2 the same into the pipe 27, which is so arranged as to form a trap for the water in the separator.

If there are any vapors carried along with the 1 water, they will pass through the by-pass 29 1 and out at the exit 28 or at `the vent-pipe 31.

As has already been stated, the Waters themselves have become cooled sufliciently so that they can be passed out into the sewer or else- The oil will be kept off at intervals through the cock 41; but for the by-pass 29 the vapors might carry some Vof the oil through the Water to the exit, but .this is now prevented.

jthe exhaust-steam from backing up into the main drip-pipe and its branches.

IIO

In the T which connects pipes 26 and 27 I place a plug 42, which can be removed for emptying the oil-separator whenever it is desired.

In Fig. 3 I show seven long sections replacing the twelve short sections in Fig. 1. The

boiler-pump is shown at 43, the engine at 44,

and the radiators at v45 45 45 45. The drippipe appears at 47, and the exhaust-pipe from the engine at 48.

I claim as my inventionr 1. The combination,with an engine, a boilerpump, and one or more radiators, ot' a feed- Water-heating apparatus consisting of a series of sections intermediate between the said engine and the said boiler-pump and radiator or radiators, the said boiler-pump having its exhaust joined to the irst section, and the said radiator or radiators having its or their returns joined to an intermediate section of the said heating apparatus, as and for the purpose set forth.

2. The combination,with an engine, a boilerpump, and one or more radiators and one or more engine-drips, of a feed-Water-heating apparatus, consisting of a series of sections intermediate between the said engine, the said radiator or radiators, and the said engine drip or drips, the said boiler-pump having its exhaust joined to the first section, and the said radiator or radiators and the said drip or drips having their returns joined to an i11- termediate section of the said heating apparatus, and the exhaust from the engine being also joined to an intermediate section, While the inlet for the feed-Water is at the last section of the said heating apparatus, as and for the purpose set forth.

3. The combination,with an engine, a boilerpump, and onegor more radiators, of a sectional feed-Water-heating apparatus, the said boiler-pump having its exhaust joined to the iirst section of the said heating apparatus and the said radiator or radiators having its or their returnsv joined to an intermediate section of the said heating apparatus, and the inlet-pipe for the feed-Water being joined to the last section of the said heating apparatus, as and for the purpose set forth.

4. The combination, with an engine and with radiators, of au intermediate sectional feed-water heater, the inlet-pipe for the feed- Water being joined to the last section of the said heater, and the returns from the radiators being joined to an antecedent section of the said heater, as and for the purpose set forth. l

5. The combination,with an engine, a boilerpump and radiators and engine-drips, of a `sectional feed-Water-h'cating apparatus, the

pipes from the engine, a valve in the connecting-pipe, and a check-valve in the pipe joining the returns to the intermediate section, the inlet-pipe for the feed-Water being joined to the last section of the said heating appaj ratus, as and for the purpose set forth.

6. The combination, with an engine and a boiler-pump, of an intermediate sectional feed-Water'heater, each section consisting of a double-chambered pipe forming an interior cylindrical and outer annular chamber, the iirst section of the said heater being joined through its inner pipe to the exhaust from the boiler-pump, and the last section of the said heater being joined through its outer pipe to the inlet-pipe for the feed-Water, as and for the purpose set forth.

7. In a feed-Water heater consisting of a series of sections7 the main drip-pipe 33, in combination With the branches 32 32 32 32 and 34, the said main drip being connected t0 one of the intermediate sections through a check-valve, the same intermediate section being joined to the exhaust-pipe from the engine, as and for the purpose set forth.

8. In a sectional feed-Water heater, the main drip-pipe 33, in combination with the branch pipes 32 32 32 32 and 34, the said main drippipe being connected to one of the intermediate sections, in combination With a boilerpump joined tothe first section, all the sections beyond the said intermediate section being provided with removal plugs, as and for the purpose set forth.

In testimony Whereot` I have signed my name, in the presence of two Witnesses, this 29th day of August, A. D. 1891.

ELIHU NELSON. Witnesses:

Gno. R. BLoDGE'rr, G. H. STOCKBRIDGE. 

